Complete Miele Dishwasher Fault Codes Reference Guide
This comprehensive guide includes all dishwasher fault codes and their detailed descriptions. Each fault code is explained with its potential causes and recommended solutions to help diagnose and resolve issues effectively.
| Fault Code | Description | Causes | Solution |
|---|---|---|---|
| F01/F02 | Temperature sensor fault | Faulty wiring or NTC sensor malfunction | Replace the faulty wiring or temperature sensor. Professional diagnosis recommended. |
| F3E | Water leakage detected | Water presence in dishwasher base, indicating leak | Inspect for limescale traces to locate leak source. Replace faulty seals or components. |
| F08 | Wash motor fault | Motor malfunction or electrical connection issues | Check motor connections and replace wash motor if necessary. |
| F11 | Drainage system fault | Blocked filter, clogged drain pump, or kinked drain hose | Clean the filter combination, check drain pump for obstructions, ensure drain hose isn’t kinked or blocked. |
| F12/F13 | Water intake problems | Closed water supply, clogged inlet filter, or low water pressure | Verify stopcock is open, clean inlet filter, check for kinks in inlet hose, ensure adequate water pressure. |
| F14 | Heater pressure switch fault | Malfunctioning pressure switch or related components | Professional diagnosis required. May need pressure switch replacement. |
| F15 | Water temperature fault | Connected to wrong water supply or temperature sensor issue | Ensure connection to cold water tap. Check temperature sensor and heating element. |
| F18/F19 | Flow meter issues | Faulty or restricted flow meter | Clean or replace flow meter depending on condition. |
| F24 | Heater relay malfunction | Faulty heater relay contact | Professional technician required to assess and replace heater relay. |
| F25 | Temperature control fault | Faulty thermostat or heating element | Replace thermostat or heating element as needed. |
| F26 | Boiling protection failure | Overheating or temperature control system failure | Professional service required to diagnose and repair temperature control system. |
| F32 | Door mechanism problems | Automatic door closing mechanism failure | Check door alignment and closing mechanism. May require professional repair. |
| F33 | Door lock stuck closed | Malfunctioning door lock mechanism | Professional service required to repair or replace door lock mechanism. |
| F36 | Door switch defect | Faulty door switch or wiring | Replace door switch or repair wiring as needed. |
| F40 | Electronic system fault | Control module failure or electronic component issues | Requires professional diagnostic and potential control board replacement. |
| F42 | Line frequency registration fault | Power supply or frequency detection issues | Check power supply and contact professional technician. |
| F47 | Electronic interface fault | Communication fault between components | Professional diagnosis required to identify and repair interface issues. |
| F51/F52 | Water level detection issues | Faulty level sensor or pressure switch | Replace level sensor or pressure switch as needed. |
| F53 | Speed sensor fault | Blocked circulation pump or defective speed sensor | Clean circulation pump or replace speed sensor. |
| F63 | Slide shutter fault | Faulty wiring, gearing, or motor drive | Professional service required to repair slide shutter mechanism. |
| F67/F68/F69 | Circulation pump problems | Pump blockage, speed issues, or complete failure | Clean pump if blocked, check for obstructions. May require pump replacement. |
| F70 | Float switch activation | Water detected in base pan, indicating leak | Inspect for leaks, check drain system integrity. May require professional repair. |
| F78 | Circulation pump electrical fault | Component disconnection or voltage issues | Check electrical connections. Professional diagnosis recommended. |
| F79 | Circulation pump interaction fault | Communication fault with pump control | Professional service required to diagnose and repair pump control system. |
| F84/F85 | Slide shutter positioning faults | Malfunctioning slide shutter mechanism | Professional service required to repair or replace slide shutter system. |
| F86 | Salt container lid contact fault | Lid not closed properly or faulty contact | Check lid closure and replace contact if necessary. |
| F87 | Sensor softener fault | Water softening system malfunction | Professional service required to repair water softening system. |
| F88 | Turbidity sensor malfunction | Faulty or damaged turbidity sensor | Replace turbidity sensor. Professional installation recommended. |
| F91 | Load size registration inactive | Load size detection system failure | Professional service required to repair load size detection system. |
Important Safety Notice
Before attempting any repairs:
- Always consult your dishwasher’s user manual for model-specific guidance
- Disconnect power before performing any internal inspections or repairs
- For complex issues or if unsure, contact a qualified appliance repair technician
- Use only manufacturer-approved replacement parts
- Document fault codes and symptoms to assist with professional diagnosis
- Consider warranty status before attempting any repairs